This is pretty cool! Though, how would one indicate that a camera is present? Like an emitter or placed model? Also, maybe there could be a way for stealth guys to see where a camera is looking in the form of a soft team-colored light similar to the flashlight mods (kinda like Bioshock cameras actually!). The other problem I see is that it may be a bit much to have the stealth team get across the map and back. Having a one-way trip might make things much more high-stakes, because a single player could cause defeat. The only other things I can think of are that it'd probably be hard to get players to work together for such a gamemode to shine. Still hella neat!
Some other suggestions
-Stealth players are fast to help make up for the ten-second stealth cooldown.
-Stealth players are kind of poorly-armed, carrying weak but ubiquitous pistols, non-headshot rifles, or really crappy shotguns. Also, backstabs!
-'Search/Security' team players are effectively armed, with the same variety of weapons as the Stealth players but their weapons would be at least a little better at their jobs. At the same time, they wouldn't be too powerful, but just good enough to outclass a stealth guy one-on-one.
- Maps for this would probably have to be based on interiors but outdoors/indoors facility-type setups could work with the right restrictions!